You look at Lightning and especially how hard it is to run a node securely and economically and one can realize this is made for industrial grade batched bitcoin transactions.

But it does scale bitcoin in a way, it allows for institutions to cheaply send and receive and this benefit trickles down the value chain: A cheap LSP e.g.
It's like a checking account for tenth the cost of what it is today, and stronger exit guarantees.

However, to truly scale bitcoin to microtransactions, we might not be able to avoid custodians.

Hope ark and spark help this situation but I don't see them solving this problem as cleanly as people would like